Home / 20,355.16-30,533.16-13,379.65

Finding the Fourth Proportional to 20,355.16, 30,533.16 and 13,379.65

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Solution

The fourth proportional to 20,355.16, 30,533.16 and 13,379.65 is: 20,069.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.16 : 30,533.16 = 13,379.65 : x
  2. Step 2: Convert to fraction form
    20,355.16/30,533.16 = 13,379.65/x
  3. Step 3: Cross multiply
    20,355.16x = 30,533.16 × 13,379.65
  4. Step 4: Simplify right side
    20,355.16x = 408,522,994.19
  5. Step 5: Solve for x
    x = 408,522,994.19/20,355.16
  6. Step 6: Final answer
    x = 20,069.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.